title: Nobody is perfect--a pacemaker dysfunction.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004562:Electrocardiography; D004567:Electrodes, Implanted; D004868:Equipment Failure; D005260:Female; D006327:Heart Block / Q000628:therapy; D006801:Humans; D010138:Pacemaker, Artificial